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| YEAR | DATE | EVENT | HEAD OF STATE |
| 98 | Roman Provence | ||
| 476 | Provence of Byzantine Empire | ||
| 584 | Kingdom - Dulo dinasty | king Kurt | |
| 642 | king Asparukh | ||
| 701 | king Tervel | ||
| 718 | king Sevar | ||
| 750 | Ukil dinasty | king Kormisash | |
| 762 | king Vinekh | ||
| 762 | Ugain dinasty | king Telets | |
| 763 | king Umar | ||
| 763 | Kamrmisash dinasty | king Baian | |
| 765 | king Tokt | ||
| 766 | king Telerig | ||
| 777 | king Kardam | ||
| 803 | Krum Khan dinasty | king Krum | |
| 814 | king Dukum | ||
| 815 | king Ditzveg | ||
| 815 | king Omurtag | ||
| 831 | king Malomir | ||
| 836 | king Presijan | ||
| 852 | king Boris I | ||
| 889 | king Vladimir | ||
| 893 | king Simeon I | ||
| 913 | Empire | zar Simeon I | |
| 927 | zar Peter I | ||
| 969 | zar Boris II | ||
| 972 | Provence of Byzantine Empire | ||
| 986 | Empire - Aran dinasty | zar Samuel | |
| 1014 | zar Gabriel | ||
| 1016 | zar John | ||
| 1018 | Provence of Byzantine Empire | ||
| 1040 | Empire - Aran dinasty | zar Pietro II | |
| 1041 | Provence of Byzantine Empire | ||
| 1185 | Principality - Asen dinasty | prince John I | |
| 1196 | prince Peter II | ||
| 1197 | Empire | zar Kalojan | |
| 1207 | zar Boril | ||
| 1218 | zar John II | ||
| 1242 | zar Kaloman I | ||
| 1246 | zar Michael II | ||
| 1257 | zar Kaloman II | ||
| 1258 | Skopije dinasty | zar Costantine | |
| 1277 | Kordukubas dinasty | zar Iwaillo | |
| 1280 | Boljaren dinasty | zar George I | |
| 1292 | Gara dinasty | zar Smilec | |
| 1298 | Boliaren dinasty | zar Theodore | |
| 1321 | zar George II | ||
| 1323 | Schischmaniden dinasty | zar Michael III | |
| 1330 | zar John IV Stephan | ||
| 1331 | zar John V Alexender | ||
| 1371 | zar John VI | ||
| 1395 | 25 september | Ottoman Occupation |
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| YEAR | DATE | EVENT | HEAD OF STATE | PRIME MINISTER |
| 1879 | 8 july | Principality - Battenberg dinasty | prince Alexander | Todor Stoyanov Burmov |
| 1879 | 6 december | Archbishop Kliment Turnovski (I) | ||
| 1880 | 5 april | Dragan Kiriakov Tsankov (I) | ||
| 1880 | 10 december | Petko Stoychev Karavelov (I) | ||
| 1881 | 9 may | Jokhan Kazimir Gustavovich Ernrot | ||
| 1881 | 13 july | prince Alexander Battemberg | ||
| 1882 | 5 july | Leonid Nikolayevich Sobolev | ||
| 1883 | 19 september | Dragan Kiriakov Tsankov (II) | ||
| 1884 | 11 july | Petko Stoychev Karavelov (II) | ||
| 1886 | 21 august | Archbishop Kliment Turnovski (II) | ||
| 1886 | 24 august | Petko Stoychev Karavelov (III) | ||
| 1886 | 28 august | Vasil Hristov Radoslavov (I) | ||
| 1886 | 7 september | Schleswig-Holstein-Sonderburg dinasty | prince Waldemar | |
| 1886 | 8 september | Stefan Nikolov Stambolov, Sava Atanasov Mutkurov, Petko Rachev Karavelov | ||
| 1886 | 27 october | Stefan Nikolov Stambolov, Sava Atanasov Mutkurov | ||
| 1886 | 13 november | Stefan Nikolov Stambolov, Sava Atanasov Mutkurov, Georgi Atanasov Zhivkov | ||
| 1887 | 10 july | Konstantin Stoilov (I) | ||
| 1887 | 14 august | dinasty Saxe-coburgo-Kohary | prince Ferdinand I | |
| 1887 | 1 september | Stefan Nikolov Stambolov | ||
| 1894 | 31 may | Konstantin Stoilov (II) | ||
| 1899 | 30 january | Dimitur Panayotov Grekov | ||
| 1899 | 13 october | Todor Ivanchov | ||
| 1901 | 25 january | Racho Petrov Petrov (I) | ||
| 1901 | 5 march | Petko Stoychev Karavelov (IV) | ||
| 1902 | 4 january | Stoyan Petrov Danev (I) | ||
| 1903 | 19 may | Racho Petrov Petrov (II) | ||
| 1906 | 5 november | Dimitur Petkov | ||
| 1907 | 12 march | Dimitur Stanchov | ||
| 1907 | 16 march | Petur Todorov Gudev | ||
| 1908 | 29 janaury | Aleksandur Pavlov Malinov (I) |
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| YEAR | DATE | EVENT | HEAD OF STATE | PRIME MINISTER |
| 1908 | 5 october | Empire -dinasty Saxe-Coburgo-Kohary | zar Ferdinando I | Aleksandur Pavlov Malinov (I) |
| 1911 | 29 march | Ivan Evstratiev Geshov | ||
| 1913 | 14 june | Stoyan Petrov Danev (II) | ||
| 1913 | 17 july | Vasil Hristov Radoslavov (II) | ||
| 1918 | 21 june | Aleksandur Pavlov Malinov (II) | ||
| 1918 | 3 october | zar Boris III | ||
| 1918 | 28 november | Todor Todorov | ||
| 1919 | 6 october | Aleksandur Stroymenov Stamboliyski | ||
| 1923 | 9 june | Aleksandur Tsolov Tsankov | ||
| 1926 | 4 january | Andrey Tasev Lyapchev | ||
| 1931 | 29 june | Aleksandur Pavlov Malinov (III) | ||
| 1931 | 12 october | Nikola Stoykov Mushanov | ||
| 1934 | 19 may | gen. Kimon Georgiev Stoyanov (I) | ||
| 1935 | 22 january | Petur Ivanov Zlatev | ||
| 1935 | 21 april | Andrey Slavev Toshev | ||
| 1935 | 23 november | Georgi Ivanov Kyoseivanov | ||
| 1940 | 16 february | Bogdan Dimitrov Filov |
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| YEAR | DATE | EVENT | HEAD OF STATE | PRIME MINISTER |
| 1941 | ||||
| 1943 | 28 august | zar Simeon II | ||
| 1943 | 14 september | Dobri Bozhilov Khadzhiyanakev | ||
| 1944 | 1 june | Ivan Ivanov Bagrianov |
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| YEAR | DATE | EVENT | HEAD OF STATE | PRIME MINISTER | GOVERNOR |
| 1944 | 1 june | Ivan Ivanov Bagrianov | |||
| 1944 | 2 september | Konstantin Vladov Muraviev | |||
| 1944 | 9 september | Russian occupation | Kimon Georgiev Stoyanov (II) | Aleksandr L. Cherepanov | |
| 1946 | 15 september | Popular Republic | Vasil Petrov Kolarov | Kimon Georgiev | |
| 1946 | 23 november | Georgi Mikhaylov Dimitrov | |||
| 1947 | 9 december | Mintscho Kolev Neychev |
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| YEAR | DATE | EVENT | HEAD OF STATE | PRIME MINISTER |
| 1948 | 30 janaury | |||
| 1949 | 2 july | Vasil Petrov Kolarov | ||
| 1950 | 23 january | Vulko Velyov Chervenkov | ||
| 1950 | 27 may | Georgi Purvanov Damyanov | ||
| 1956 | 18 april | Anton Tanev Yugov | ||
| 1958 | 27 november | Georgi Kulishev Gugov (I) and Nikolay Georgiev Ivanov (I) | ||
| 1958 | 30 november | Dimitur Ganev Vurbanov | ||
| 1962 | 27 november | Todor Khristov Zhivkov | ||
| 1964 | 20 april | Georgi Kulishev Gugov (II) and Nikolay Georgiev Ivanov (II) | ||
| 1964 | 23 april | Georgi Traykov Girovski |
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| YEAR | DATE | EVENT | HEAD OF STATE | PRIME MINISTER |
| 1968 |
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| YEAR | DATE | EVENT | HEAD OF STATE | PRIME MINISTER |
| 1971 | 7 july | Popular socialist Republic | Todor Khristov Zhivkov | Stanko Georgiev Todorov |
| 1981 | 16 june | Grisha Stanchev Filipov | ||
| 1986 | 21 march | Georgi Ivanov Atanasov | ||
| 1989 | 17 november | Petur Toshev Mladenov | ||
| 1990 | 3 february | Andrey Karlov Lukanov | ||
| 1990 | 6 july | Stanko Todorov Georgiev | ||
| 1990 | 17 july | Nikolay Todorov Todorov |
| YEAR | DATE | EVENT | HEAD OF STATE | PRIME MINISTER |
| 1990 | 1 august | Republic | Zhelyu Mitev Zhelev | Andrey Karlov Lukanov |
| 1990 | 7 december | Dimitur Ilchev Popov | ||
| 1991 | 8 november | Filip Dimitrov Dimitrov | ||
| 1992 | 30 december | Lyuben Berov | ||
| 1994 | 17 october | Reneta Indzhova | ||
| 1995 | 25 january | Zhan Vasilev Videnov | ||
| 1997 | 22 january | Petur Stefanov Stoyanov | ||
| 1997 | 13 february | Stefan Antonov Sofianski | ||
| 1997 | 21 may | Ivan Yordanov Kostov | ||
| 2001 | 24 july | Simeon Borisov Sakskoburggotski (ex-zar Simeon II) | ||
| 2002 | 22 january | Georgi Sedefchov Purvanov | ||
| 2005 | 16 august | Sergey Stanishev | ||
| 2009 | 7 july | Boyko Borisov | ||
| 2011 | 30 october | Rosen Plevneliev |